What does the Bible say about fulfilling the Great Commission?

In Acts 14, the Apostle Paul and Barnabas exemplify the fulfillment of the Great Commission by journeying extensively to preach the gospel and establish churches. They returned to confirm the faith of the believers, demonstrating the commitment to nurturing and strengthening the community of faith. This reflects the biblical mandate to not only share the gospel but also to ensure that believers are grounded in their faith, supporting them through trials and tribulations as they enter the kingdom of God.